Both welsummer and Wyandotte tend to one of the first breed to stop laying. Mine don't lay through the winter nor the summer. Neither is a high production breed.
I wouldn't put any lights in the coop at night as it will disrupt their sleep. A closed up coop isn't good no matter how cold it is. I would post a photo of your set up and start a new thread asking about the ventilation issue in the coop forum or even the managing your flock forum, you might get some great ideas.
I wouldn't put any lights in the coop at night as it will disrupt their sleep. A closed up coop isn't good no matter how cold it is. I would post a photo of your set up and start a new thread asking about the ventilation issue in the coop forum or even the managing your flock forum, you might get some great ideas.